About the security content of iOS 6

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

iOS 6

CFNetwork

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to the disclosure of sensitive information

Description: An issue existed in CFNetwork's handling of malformed URLs. CFNetwork may send requests to an incorrect hostname, resulting in the disclosure of sensitive information. This issue was addressed through improvements to URL handling.

CVE-ID

CVE-2012-3724 : Erling Ellingsen of Facebook

CoreGraphics

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Multiple vulnerabilities in FreeType

Description: Multiple vulnerabilities existed in FreeType, the most serious of which may lead to arbitrary code execution when processing a maliciously crafted font. These issues were addressed by updating FreeType to version 2.4.9. Further information is available via the FreeType site at http://www.freetype.org/

CVE-ID

CVE-2012-1126

CVE-2012-1127

CVE-2012-1128

CVE-2012-1129

CVE-2012-1130

CVE-2012-1131

CVE-2012-1132

CVE-2012-1133

CVE-2012-1134

CVE-2012-1135

CVE-2012-1136

CVE-2012-1137

CVE-2012-1138

CVE-2012-1139

CVE-2012-1140

CVE-2012-1141

CVE-2012-1142

CVE-2012-1143

CVE-2012-1144

CoreMedia

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Viewing a maliciously crafted movie file may lead to an unexpected application termination or arbitrary code execution

Description: An uninitialized memory access existed in the handling of Sorenson encoded movie files. This issue was addressed through improved memory initialization.

CVE-ID

CVE-2012-3722 : Will Dormann of the CERT/CC

DHCP

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A malicious Wi-Fi network may be able to determine networks a device has previously accessed

Description: Upon connecting to a Wi-Fi network, iOS may broadcast MAC addresses of previously accessed networks per the DNAv4 protocol. This issue was addressed by disabling DNAv4 on unencrypted Wi-Fi networks.

CVE-ID

CVE-2012-3725 : Mark Wuergler of Immunity, Inc.

ImageIO

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Viewing a maliciously crafted TIFF file may lead to an unexpected application termination or arbitrary code execution

Description: A buffer overflow existed in libtiff's handling of ThunderScan encoded TIFF images. This issue was addressed by updating libtiff to version 3.9.5.

CVE-ID

CVE-2011-1167

ImageIO

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Viewing a maliciously crafted PNG image may lead to an unexpected application termination or arbitrary code execution

Description: A buffer overflow existed in the handling of racoon configuration files. This issue was addressed through improved bounds checking.

CVE-ID

CVE-2012-3727 : iOS Jailbreak Dream Team

Kernel

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A local user may be able to execute arbitrary code with system privileges

Description: An invalid pointer dereference issue existed in the kernel's handling of packet filter ioctls. This may allow an attacker to alter kernel memory. This issue was addressed through improved error handling.

CVE-ID

CVE-2012-3728 : iOS Jailbreak Dream Team

Kernel

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A local user may be able to determine kernel memory layout

Description: An uninitialized memory access issue existed in the Berkeley Packet Filter interpreter, which led to the disclosure of memory content. This issue was addressed through improved memory initialization.

CVE-ID

CVE-2012-3729 : Dan Rosenberg

libxml

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Viewing a maliciously crafted web page may lead to an unexpected application termination or arbitrary code execution

Description: Multiple vulnerabilities existed in libxml, the most serious of which may lead to an unexpected application termination or arbitrary code execution. These issues were addressed by applying the relevant upstream patches.

CVE-ID

CVE-2011-1944 : Chris Evans of Google Chrome Security Team

CVE-2011-2821 : Yang Dingning of NCNIPC, Graduate University of Chinese Academy of Sciences

CVE-2011-2834 : Yang Dingning of NCNIPC, Graduate University of Chinese Academy of Sciences

CVE-2011-3919 : Jüri Aedla

Mail

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Mail may present the wrong attachment in a message

Description: A logic issue existed in Mail's handling of attachments. If a subsequent mail attachment used the same Content-ID as a previous one, the previous attachment would be displayed, even in the case where the 2 mails originated from different senders. This could facilitate some spoofing or phishing attacks. This issue was addressed through improved handling of attachments.

CVE-ID

CVE-2012-3730 : Angelo Prado of the salesforce.com Product Security Team

Mail

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Email attachments may be read without user's passcode

Description: A logic issue existed in Mail's use of Data Protection on email attachments. This issue was addressed by properly setting the Data Protection class for email attachments.

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: An attacker may spoof the sender of a S/MIME signed message

Description: S/MIME signed messages displayed the untrusted 'From' address, instead of the name associated with the message signer's identity. This issue was addressed by displaying the address associated with the message signer's identity when it is available.

CVE-ID

CVE-2012-3732 : An anonymous researcher.

Messages

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A user may unintentionally disclose the existence of their email addresses

Description: When a user had multiple email addresses associated with iMessage, replying to a message may have resulted in the reply being sent from a different email address. This may disclose another email address associated to the user's account. This issue was addressed by always replying from the email address the original message was sent to.

CVE-ID

CVE-2012-3733 : Rodney S. Foley of Gnomesoft, LLC

Office Viewer

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Unencrypted document data may be written to a temporary file

Description: An information disclosure issue existed in the support for viewing Microsoft Office files. When viewing a document, the Office Viewer would write a temporary file containing data from the viewed document to the temporary directory of the invoking process. For an application that uses data protection or other encryption to protect the user’s files, this could lead to information disclosure. This issue was addressed by avoiding creation of temporary files when viewing Office documents.

CVE-ID

CVE-2012-3734 : Salvatore Cataudella of Open Systems Technologies

OpenGL

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Applications that use OS X's OpenGL implementation may be vulnerable to an unexpected application termination or arbitrary code execution

Description: Multiple memory corruption issues existed in the handling of GLSL compilation. These issues were addressed through improved validation of GLSL shaders.

CVE-ID

CVE-2011-3457 : Chris Evans of the Google Chrome Security Team, and Marc Schoenefeld of the Red Hat Security Response Team

Passcode Lock

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A person with physical access to the device could briefly view the last used third-party app on a locked device

Description: A logic issue existed with the display of the "Slide to Power Off" slider on the lock screen. This issue was addressed through improved lock state management.

CVE-ID

CVE-2012-3735 : Chris Lawrence DBB

Passcode Lock

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A person with physical access to the device may be able to bypass the screen lock

Description: A logic issue existed in the termination of FaceTime calls from the lock screen. This issue was addressed through improved lock state management.

CVE-ID

CVE-2012-3736 : Ian Vitek of 2Secure AB

Passcode Lock

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: All photos may be accessible at the lock screen

Description: A design issue existed in the support for viewing photos that were taken at the lock screen. In order to determine which photos to permit access to, the passcode lock consulted the time at which the device was locked and compared it to the time that a photo was taken. By spoofing the current time, an attacker could gain access to photos that were taken before the device was locked. This issues was addressed by explicitly keeping track of the photos that were taken while the device was locked.

CVE-ID

CVE-2012-3737 : Ade Barkah of BlueWax Inc.

Passcode Lock

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A person with physical access to a locked device may perform FaceTime calls

Description: A logic issue existed in the Emergency Dialer screen, which permitted FaceTime calls via Voice Dialing on the locked device. This could also disclose the user's contacts via contact suggestions. This issue was addressed by disabling Voice Dialing on the Emergency Dialer screen.

CVE-ID

CVE-2012-3738 : Ade Barkah of BlueWax Inc.

Passcode Lock

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A person with physical access to the device may be able to bypass the screen lock

Description: Using the camera from the screen lock could in some cases interfere with automatic lock functionality, allowing a person with physical access to the device to bypass the Passcode Lock screen. This issue was addressed through improved lock state management.

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A person with physical access to the device may be able to bypass the screen lock

Description: A state management issue existed in the handling of the screen lock. This issue was addressed through improved lock state management.

CVE-ID

CVE-2012-3740 : Ian Vitek of 2Secure AB

Restrictions

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A user may be able to make purchases without entering Apple ID credentials

Description: After disabling Restrictions, iOS may not ask for the user's password during a transaction. This issue was addressed by additional enforcement of purchase authorization.

CVE-ID

CVE-2012-3741 : Kevin Makens of Redwood High School

Safari

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Websites may use characters with an appearance similar to the lock icon in their titles

Description: Websites could use a Unicode character to create a lock icon in the page title. This icon was similar in appearance to the icon used to indicate a secure connection, and could have lead the user to believe a secure connection had been established. This issue was addressed by removing these characters from page titles.

CVE-ID

CVE-2012-3742 : Boku Kihara of Lepidum

Safari

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Passwords may autocomplete even when the site specifies that autocomplete should be disabled

Description: Password input elements with the autocomplete attribute set to "off" were being autocompleted. This issue was addressed through improved handling of the autocomplete attribute.

CVE-ID

CVE-2012-0680 : Dan Poltawski of Moodle

System Logs

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Sandboxed apps may obtain system log content

Description: Sandboxed apps had read access to /var/log directory, which may allow them to obtain sensitive information contained in system logs. This issue was addressed by denying sandboxed apps access to the /var/log directory.

CVE-ID

CVE-2012-3743

Telephony

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: An SMS message may appear to have been sent by an arbitrary user

Description: Messages displayed the return address of an SMS message as the sender. Return addresses may be spoofed. This issue was addressed by always displaying the originating address instead of the return address.

CVE-ID

CVE-2012-3744 : pod2g

Telephony

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: An SMS message may disrupt cellular connectivity

Description: An off-by-one buffer overflow existed in the handling of SMS user data headers. This issue was addressed through improved bounds checking.

CVE-ID

CVE-2012-3745 : pod2g

UIKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: An attacker that gains access to a device's filesystem may be able to read files that were being displayed in a UIWebView

Description: Applications that use UIWebView may leave unencrypted files on the file system even when a passcode is enabled. This issue was addressed through improved use of data protection.

CVE-ID

CVE-2012-3746 : Ben Smith of Box

WebKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Look-alike characters in a URL could be used to masquerade a website

Description: The International Domain Name (IDN) support and Unicode fonts embedded in Safari could have been used to create a URL which contains look-alike characters. These could have been used in a malicious website to direct the user to a spoofed site that visually appears to be a legitimate domain. This issue was addressed by supplementing WebKit's list of known look-alike characters. Look-alike characters are rendered in Punycode in the address bar.

CVE-ID

CVE-2012-3693 : Matt Cooley of Symantec

WebKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to a cross-site scripting attack

Description: A canonicalization issue existed in the handling of URLs. This may have led to cross-site scripting on sites which use the location.href property. This issue was addressed through improved canonicalization of URLs.

CVE-ID

CVE-2012-3695 : Masato Kinugawa

WebKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to HTTP request splitting

Description: An HTTP header injection issue existed in the handling of WebSockets. This issue was addressed through improved WebSockets URI sanitization.

CVE-ID

CVE-2012-3696 : David Belcher of the BlackBerry Security Incident Response Team

WebKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: A maliciously crafted website may be able to spoof the value in the URL bar

Description: A state management issue existed in the handling of session history. Navigations to a fragment on the current page may cause Safari to display incorrect information in the URL bar. This issue was addressed through improved session state tracking.

CVE-ID

CVE-2011-2845 : Jordi Chancel

WebKit

Available for: iPhone 3GS and later, iPod touch (4th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to the disclosure of the disclosure of memory contents

Description: An uninitialized memory access issue existed in the handling of SVG images. This issue was addressed through improved memory initialization.

CVE-ID

CVE-2012-3650 : Apple

FaceTime is not available in all countries or regions.

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